Locking device for nuts, screws, bolts, and the like



May 14, 1935. ABELL v 2,001,645

LOCKING DEVICE FOR NUTS, SCREWS, BOLTS, AND THE LIKE Filed June 27, 1934 E5741; a I; Q Y

Patented May 14, 1935 I i i UNITED STATES PATENT OFFICE DEVICE FOR NUTS, SCREWS, BOLTS, AND THE LIKE Henry Clark Abel], Interiaken, N. J. Application June 27, 1934, Serial No. 732,601

6 Claims. (01. 151-30) This invention relates to new and useful im- Fig. '7 is a view similar to Fig. 6 but illustrating provements in locking devices for nuts, screws, -a still further modified form.

bolts and the like. Fig. 8 is a view similar to Fig. but illustrating The invention has for an object the construcanother embodiment of the invention. 5 tion of a device as mentioned which is character- Fig. 9 is an elevational view of a bolt according 5' ized by the provision of a curved washer adapted to another embodiment of the invention. to slidably engage over the threads of a bolt and Fig. 10 is a plan view of a curved washer used non-rotatively connected with the bolt and in connection with the bolt illustrated in Fig. 9. adapted to have its periphery clamped against Fig. 11 is a fragmentary sectional view of a 10 the walls of a bore when pressed flat in abolt and nut with a locking device according to 10 counter bore of a nut for said bolt. a modified form of the invention.

Still further the invention proposes the provi- Fig. 12 is a fragmentary sectional view of a sion of radial slots upon the nut arranged in a bolt and nut illustrated with the locking device manner-so that a tool may be inserted therein by in flattened or engaging position.

which the lock washer may be pried loose. Fig. 13- is a side elevational view of a bolt 15 Still further the invention proposes a novel and nut with a locking device constructed acmanner for the connection of the curved washer cording to a still further modified form of the with the bolt in a non-rotative manner, and in invention.

a manner which allows sliding of the washer Fig. 14 is a perspective view of tubular memalong the bolt. bers used in engaging the curved washer upon 20 Still further the invention proposes the conthe bolt in a locking position. struction in a locking device as mentioned. of a The locking device according to this invention curved washer of pliable material with a nonis used in combination with a bolt I ll equipped compressible core arranged in a particular manwith a nut Ii. The bolt is shown engaged ner so that when flattened out its periphery will through plates I2 and I3 and the nut II is 5 engage firmly against the counter bore in a nut shown threadedly engaged upon the bolt as or the like. though in the operation of holding the plates Still further the invention also proposes the i2 and I3 together. The nut II is formed with construction of a device as mentioned which is a counter-bore l4 connecting with a pair of.

simple and durable and which may be manudiametrically opposite radial grooves i5. A 3

factured and sold at a reasonable cost. curved washer I6 is formed with a central For further comprehension of the invention, opening so as to be slidably engageable over and of the objects and advantages thereof, referthe threads of the bolt l0 and is of. arcuate ence will be had to the following description and shape in radial cross section and arranged with accompanying drawing, and to the appended the inner, outer diameters on a common plane. 35 claims in which the various novel features of the The washer I6 is constructed to be nonrotainvention are more particularly set forth. tive upon the bolt. More particularly it is Inthe accompanying drawing forming amateformed with a central opening having a flat rial part of this diss1osure; side I1, and the bolt i0 is constructed with 'a 40 m 1 is a frag e tary sectional View f a flat side i8 adapted to coact with the flat side 40 bolt and nut with a locking device according I! so as to prevent rotation of the washer while this invention allowing sliding of the washer along the bolt.

Fig. 2 is an elevational view of the outer end f 1S E is frqmt gl mi s fl as o mam am p s1 10115 in o w 10 1 1s en gi gg g i g fif fihi gig g gg i looking m the or forced. The periphery of the washer is is 45 F1 3 1 ie of t ed h adapted to clamp against the walls of the bore ls D an v w e v was er it when pressed flat. The washer I6 is placed P in position upon the nut so as to be concaved Fig. 4 IS a sectional view taken on the line outwardly The arrangement is such t t a o 4-4 of F 8. 3. tubular member, such as tubular member I9 Fig. 5 is a view similar to Fig. 4 but illustratin illu trated i Fig. 11, may be engaged over th another embodiment of the invention. end of the bolt and hammered to cause the 6 is a sectional view of a curved washer curved washer to be flattened out in a manner constructed according to a still further embodiso that its periphery clamps against the wall of [I ment of the invention. a the bore. The purpose of the radial slots I5 material lead, or other pliable material. The washer should be so designed that the pliable material I G is capable of holding the non-compressible material l6 in various conditions, for example, if the curved washer is hammered flat the pliable material is capable of holding the non-compressible material It in the flat condition, It is a feature of this invention that the non-compressible core l6 has one edge flush with the central opening of the washer while its periphery is spaced from the periphery of the pliable material so that the pliable material will be clamped against the wall of a bore when the washer is used upon a bolt and nut as described relative to the washer I6.

In Fig 6 another embodiment of the invention is disclosed in which a washer lt is illustrated which is substantially the same as the washer shown in Fig. 4 except for the fact that it is of different shape. It is pointed out that the washer I6 is of pliable material and may be flattened out when desired to cause its periphery to grip the wall of a bore. The central area of the washer I6 is flat as clearly illustrated in Fig. 6. It is provided with an annular raised portion l6 from which a downward inclination portion extends. This downward inclined portion terminates in the periphery It. This type of acurved washer is used as before described with respect to washer 16, but the annular raised portion 16 is hammered flat so as to cause the periphery li to. engage against the wall of the bore.

In Fig. '7 another embodiment of washer is disclosed which is of a shape identical to the shape illustrated in Fig. 6, but distinguishes in the fact that the washer comprises a non-compressible core I6 and pliable covering material I6 The core I6 is arranged so that its central opening is aligned with central opening of the washer, while its periphery is spaced from the periphery of the pliable material so that the pliable material exists between the periphery of the non-compressible core and the wall of the bore when the washer is used.

In Fig. 8 a detail of the washer I 6 is shown and it should be noticed that it comprises a noncompressible core Hi and pliable covering material l6 The non-compressible core I6 has its periphery corresponding with the periphery of the pliable material I6 but has an inner diameter spaced from the inner diameter of the pliable material so that there is some pliable,

extended in from the end. The arrangement is such that the washer l6 may be engaged upon the end of the bolt with the bar 20 extending It may be constructed of copperthrough the slot 2|. The application of the bolt and washer is identical to the arrangement illustrated and described relative to Figs. 1 and 2,'that is, the device is intended to be used in conjunction with a nut having a counter-bored side.

In Fig. 11 the washer I6 is illustrated in position ready for gripping the bolt III and nut II.

In Fig. 12 the washer I6 is showngin flattened, engaging position.

In Fig. 13 another embodiment of the inven"- tion is disclosed in which a bolt I is shown provided with a nut ll of conventional construction distinguishing from the 'nut II in that it is not provided with a counter-bore. A curved pliable material washer I 6 is shown engaged upon the end of the bolt and is adapted to hold the nut II' in position. In this particular case the washer I6 is firmly clamped upon the bolt itself distinguishing from the previous arrangements in which the 'washer was clamped upon the nut.

The following process is used to clamp the washer it upon the end of the bolt. A tubular member 22 is engaged over the washer I. and has its inner diameter corresponding identically with the outside diameter of the washer. Then a smaller sized. tube, such as the tube I9, is engaged over the end of the bolt and may cause the washer l6 to become flat by manual hammering uponthe end of the washer. It should be noticed that since the tubular member 22 prevents the pliable curved washer I! from becoming larger, necessarily when it is flattened out the central portion thereof must become smaller and in this manner ittightly engages itself upon the bolt.

While I have shown and describedthe preferred embodiment of my invention, it is to be understood that I do-not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:-

1. In a lock nut construction, the combination of a bolt, a nut on said bolt having a counter-bore at its outer face, a curved washer slidable over the threads of said bolt and nonrotatively connected with said bolt, said curved washer being arcuate shape inradial cross section and having the inner and outer diameters initially on a common plane, and adapted to have its inner and outer diameters clamped against the walls of said bolt and bore respectively when pressed flat in said counter-bore.

2. In a lock nut construction, a curved washer adapted to slidably engage over the threads of a bolt and non-rotatively connected with said bolt and adapted to have its periphery clamped against the walls of a bore in a nut engaged upon said bolt when pressed flat in said bore, said washer being of pliable material.v

3. In a lock nut construction, a curved washer adapted to slidably engage over the threads of a bolt and non-rotatively connected with said bolt and adapted to have its periphery clamped against the walls of a bore in a nut engaged upon said bolt when pressed flat in said bore, said curved portion having a non-compressible core and compressible coveringmaterial.

4. In a lock nut construction, a curved washer adapted to slidably engage over the threads of a bolt and non-rotatively connected with said bolt and adapted to have its periphery clamped against the walls of a bore in a nut engaged upon said bolt when pressed flat in said bore, said curved portion having a non-compressible core and compressible covering material, the inner edges of the compressible and pliable material being aligned with each other but the outer edge of the pliable material extending from the outer edge of said non-compressible core so that pliable material exists between the peripheryof the core and the wall of said core when said curved washer is engaged in place.

5., In a locked nut construction, a curved washer adapted to slidably engage over the threads of a bolt and adapted to have its periphery held and hammered flat so as to grip said bolt, and having a core of non-compressible material and pliable covering material over said core, said pliable covering material being arranged so as to be positioned between the bore and the non-compressible core.

6. In a locked nut construction, a curved washer adapted to slidably engage ,over the threads of a bolt and adapted to have its periphery held and hammered flat so as to grip said bolt, and having a core of non-compressible material and pliable covering material over said core, said pliable covering material being arranged so as to bepositioned between the bore and the non-compressible core, and the outer diameters of the core and the pliable material being flush with each other.

' HENRY CLARK ABEL-L. 

